Operating mechanism for jacks



GI In I OPERATING MECHANISM FOR HICKS.

APPLICATION FILED DEC-221 I920.

- menmnov, 7,1922;

I N VENTOR 650E551. H/PPLE i HDl i. ndi o GEORGE I. HIPPLE, OF CHICAGO, ILLIDTQIFQ OPERATING MECHANIQTJI F 31; JACEZSL Application filed December 22, 1928. Serial No. LEEfiiZ- L.

To all uni 277i it may concern-:

is it known that l. (licouoi: l. lijlrrnu. a citizen oi the United States residing at Chicago. in the county ot Cool: and F /tote 0t lllinois. have invented a new and use'tul improvement in Operating illeehanisms tor Jacks. of which the 'tollowiim is a specification.

My invention relates to an improved oper atin c mechanism For jacks for lifting purposes. particularly relatively small jacks used in connection with motor vehicles and it comprises a handle tor operatingthe jack which may he lolded when not in use and secured together in use to cons itute in ettect a rigid member for operating" the iack by an oscillating motion. My impro operating mechanism is ada 'ited tor use in connection with jacks actuated hy moving pawls and I provide a reversing mechanism on my handle by which either desired pawl may he made operative and at the same time moving the other pawl to inoperating position. which reversing; mechanism extends along" the operatinghandle so that it may readily he engaged at a distance from the column of the jack thus making the rovers inc mechanism more accessible when the jar-l; is under the axle oi a vehicle than would he the case it it were necessary to reach under the vehicle to operate the re versine' mechanism.

llly invention will best he understood by reference to the accompanying drawings showing a preferred embodiment thereo't in which Fig. 1 shows my operating mechanism in side elevation inplace on a iacli'.

Fig. 2 is a plan view of the pawl and ratchet opera-ting devices and the reversing mechanism associated therewith shown in Fig. 1,

shows in rear elevation the hearing; employed in connection with the jack.

Fin. 4: shows in a view similar to Fig. l hut from the opposite direction. my improved handle construction with a modified l i T ,i v As shown in rigs p I he construction cons s oi a colun'in l0. which is hollow to receive a screw ll cal rying; at its upper end a saddle iii. The screw 11 has bevel gear lif'l meshing threaded thereon a slip over the end of said stud on which. it is held by any Slllttlblfi means. The enlarged portion 21 is also extended upwardly and pivotally carries the pawls l7 and 1.8 on a pin 22. The pawls 17 and 18 have extending laterall there'trom pins and 2% respectively er aged bythe cam surfaces 25 and 26 carried by the re ersing bar 27 which is mounted to slide on the member 20 ot the handle. The harQ'T is held in place hy suitahle rivets which pass through slots in said bar to permit the slid ng motion re 'lerred to and said bar has ioi'ined on its outer end an ear or lung 20 to be engaged hy the operator.

The portions 19 and 20 oi the handle are pivotally connected at 30 by suitable rivet or bolt and the portion 19 carries thumb sore-will which mav be screwed into the portion 20 oi the handle when in use or un screwed trom said portion 20 to permit the folding oi" the portion if) on the holt '10 against the portion 20 ot the handle.

is more clcarl i' shown in lTi I) the ihiunh screw ill is provided with a flange which prevents its read v removal from the portion if). suitable clearances being pro ided in the portions l9 and 20 ot the handle to permit the flange to move From one of its extreme ';:1iosi tions to the other.

.As a result of the construction described it will appear that when not in use, the handle. which for convenience and easy operatioii.shoiild he substantially twice as long as the height oft the column of the iaciqi. may be folded into substantially the length of the column and lie close to the column and parallel therewith and thus occupies a minimum of space which is desirable in 0011- nection with storing the jack; also that in its folded condition there are no loose parts. lit will be further observed that either of the operating pawls may be moved away from the ratchet wheel by the movement of the reversing bar when the jack is in use without requiring the operator to reach to the jack itself, thus reducing the liability of soiling the clothes and making the adjustment of the pawls a much easier operation than where it is necessary to reach to the jack itself. Furthermore the iandle in its extended position with the clamping screw in place forms a very convenient means for moving the jack to its proper position and for removing the ack after it has been used without requiring the operation to reach under the vehicle to be raised by the jack.

in the modified construction shown in Fig, l the handle construction is the same as described above and the pawls 17 and 18 are similarly carried by the handle, the only difference being that the reversing bar 27 is mounted on the opposi e side of the portion 20 from that on which the reversing bar 27 is supported. The operation of the reversing bar is substantially the same as described above for the reversing bar 27, motion in one direction raising one of the pawls and permitting the other pawl to be operative while motion in the other direction reverses the relation of the pawls to the ratchet wheel.

While I have shown my invention in the particular embodiment above described, it will be understood that I do not limit my self to this exact construction as I may employ equivalents known to the art at the time of the filing of this application without departing from the scope of the appended claims.

hat I claim is:

1. In a lifting jack, the combination of a column, a bar movable in the column, gearing for moving the bar relatively to the column including two pawls for moving said bar in opposite directions, a handle pivotally connected to said column and carrying said pawls. and a member carried by said handle and movable relatively thereto for controlling the operative relation of said p-awls at a point remote from said column. 2. In a lifting jack, the combination of a column, a bar movable in the column, gearing for moving the bar relatively to the column including two pawls for moving said bar in opposite directions, a handle pivotally connected to said column and carrying said pawls. and a member carried by said handle, and movable relatively thereto for controlling the operative relation of said pawls at a point remote from said column, said gearing comprising a first bevel gear threaded. on said bar, a second bevel gear meshing with said first gear, and a ratchet wheel secued to said s'econd gear to be engaged by said pawls.

In a lifting jack, the combination of a column, a bar movable in the column, gear ing for moving the bar relatively to the column including two pawls for moving said bar in opposite directions, a handle pivotally connected to said column and carrying said pawls, and a member carried by said handle for controlling the operative relation of said pawls at a point remote from said column, said gearing comprising a first bevel gear threaded on said. bar, a second bevel gear meshing with said first gear, and a ratchet wheel secured to said second gear to he engaged by said pawls, and said member comprising a reciprocable bar having lugs for engaging said pawls to move either of them as desired to inoperative position and permit the other of them to operate.

4-. In a lifting jack, the combination of a column, a bar movable in the column, gearing for moving the bar relatively to the column including two pawls for moving said bar in opposite directions, a handle pivotally connected to said column and carrying said pawls. and member carried by said handle for controlling the operative rela tion of said pawls at a point remote from said column said member comprising a reciprocable bar having lugs for engaging said pavvls to move either of them as desired to inoperative position and permit the other of them to operate.

5. An operating mechanism of the class described comprising a handle having a bearing at one end, two pawls carried by said handle adjacent said bearing and movable to operative and inoperative positions, and a reversing member extending along said handle from said pawls for moving either pawl to inoperative position and permitting the other pawl to assume its operative position.

6. An operating mechanism of the class described comprising a handle having a bearing at one end. two pawls carried by said handle adjacent said bearing and movable to operative and inoperative positions, and a reversing member extending along said handle from said pawls for moving either pawl to inoperative position and permitting the other pawl to assume its operative position, said member comprising a bar mounted to slide on said handle and having lug extending from its outer end to be engaged by the operator.

In whereof, I hereunto subscribe my name this 13th day of December, A. D. 1920.

GEORGE I. HIPPLE. 

